DC/OS is a distribution of Mesos similar to how Red Hat is a distribution of Linux. It includes additional open-source and closed-source components that make r

DC/OS is a distribution of Mesos similar to how Red Hat is a distribution of Linux. It includes additional open-source and closed-source components that make running/managing a Mesos cluster and Mesos frameworks (such as Marathon, Spark, Cassandra, etc) easier. The community edition is free to use.